title: The nature of immune response gene defects.
mesh_terms: D000818:Animals; D005802:Genes, MHC Class II; D000949:Histocompatibility Antigens Class II / Q000502:physiology*; D008264:Macrophages / Q000502:physiology; D051379:Mice; D013601:T-Lymphocytes / Q000502:physiology
chemical_list: D000949:Histocompatibility Antigens Class II